unrealized crush advice

Howdy

To keep it short, had a crush on a guy for the last 3 years. Didnt spend much time with him, hes the son of a family friend. For some reason this crush hit me harder than anything else ever before. I'm hella shy and had some mental health issues that needed sorting prior to dating. I guess I waited too long, i was about to ask him out this week but I find out from my mother that he happens to live in south america rn and he is ENGAGED. Yall, I cried for 6 hours now and I cant seem to stop. How do I deal with this? My chest feels like I've been stabbed and I feel like someone kicked me in the stomach. I only spoke to him few times, I dont fukcing understand where these feelings are coming from. I've already worked out, what else can I do to make myself feel better?